parker says oakland has already heavily invested in system to tax and regulate dispensaries. >> we laugh a great deal of time and energy and money setting up this system that is consistent with california law. and is a tragic way of the government's resources. >> but others say potash shops never should have been able to open 2349 first place. >> federal law, law of the land or is it law, that's the bottom line. >> carla lowe is citizens against legalization of marijuana. a lobbying group based in sacramento. pot is unsafe and ineffective. not a -- an 'digtive, dangerous drug. >> not a medicine. always been a joke, a cruel hoax, always has been, always will be. f.d.a. will never approved it for any product to be deemed a medicine. >> with the recent legalization of medical marijuana in washington and colorado national leaders are re-examining pot policies. the justice department soon expected to issue a response which now allow adults 21 and old tore possess up to one ounce legally. on capitol hill, senate judiciary chairman patrick leahy called for congressional hearings on the issue an